Editing Cpu Parameters; Table 14-1 Modifiable Cpu Parameters - Siemens SIMATIC S7-400H System Manual

System modifications in operation

14.7 Editing CPU parameters

14.7 Editing CPU parameters
14.7.1 Editing CPU parameters
Only certain CPU parameters (object properties) can be edited in operation. These are
highlighted on the screen forms by blue text. If you have set blue as the color for dialog box
text on the Windows Control Panel, the editable parameters are indicated in black characters.
NOTICE
If you edit any protected parameters, the system will reject any attempt to changeover to
the CPU containing those modified parameters. The error event W#16#5966 is triggered
and written to the diagnostic buffer, and you will then have to restore the wrongly changed
parameters in the parameter configuration to their last valid values.
Table 14-1
Tab
Startup
Cycle/clock memory
Memory
Time-of-day interrupts (for each
time-of-day interrupt OB)
Cyclic interrupt (for each cyclic
interrupt OB)
Diagnostics/clock
Security
H parameter
Modifying these parameters also modifies the memory content.
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The selected new values should match both the currently loaded and the planned new user
program.
234
Modifiable CPU parameters
Editable parameter
Monitoring time for signaling readiness by modules
Monitoring time for transferring parameters to modules
Cycle monitoring time
Cycle load due to communication
Size of the process image of inputs
Size of the process image of outputs
Local data for the various priority classes
Communication resources: Maximum number of communication
requests. You may only increase the configured value of this
parameter
"Active" checkbox
"Execution" list box
Starting date
Time
Execution
Phase offset
Correction factor
Protection level and password
Test cycle time
Maximum cycle time extension
Maximum communication delay
Maximum inhibit time for priority classes > 15
Minimum I/O retention time
.
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System Manual, 09/2007, A5E00267695-03
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S7-400H